| Subject | English | Italian |
| comp., MS | federated instant messaging | relativo a messaggistica immediata federata (Pertaining to federated instant messaging) |
| comp., MS | instant messaging | messaggistica istantanea (Pertaining to a message sent in real time through a network to a private chat area) |
| comp., MS | instant messaging | instant messaging, messaggistica immediata (A method of real-time communication over the Internet in which a sender types a message to one or more recipients and the recipient immediately receives the message in a chat area) |
| comp., MS | instant messaging session | sessione di messaggistica istantanea (A real-time communication over the Internet in which a sender types a message to one or more recipients and the recipient(s) immediately receives the message in a pop-up window) |